Phonograph-stop.



PatentedJuly, 1916.

3 SHEET5-SHEET l.

7 3 m ve-m-fo z M. ADAIR.

, PHONOGRAPH STOP.

APPLICATION FILED )MLZI. 191s.

' Patented July 4, 1916.

3 SHEETSSHEET 2.

anven l'oz 77t 31 1.3 3110111;

M. ADAIR.

PHONOGRAPH STOP.

APPLlCATlON men mu.21. x916;

Patented July 4, 1916.

3 SHEETSSHEET 3 Ali /3 m L m .v n 3% M m L 5 UNITED STATES PATENT oEEIoE.

MONTAGUE ADAIR, OF NEW YORK, N. Y.

PHONOGRAPH-STOP.

Application filed January 27, 1916.

To a whom it may concern:

Be it known that I, MON'IAGUE Anna, a citizen of the United States. and a resident of the borough of Brooklyn, in the county of Kings. city and State of New York. have invented certain new and useful Improvements in Phonograph-Stops, of which the following is a specification.

This invention relates generally to stopping mechanisms for sound reproducing devices. and more particularly to that type of sound reproducer in which the record takes the form of a disk.

In my application filed Jan. 11, 1915, Serial No. 1556. there "as disclosed a-construction in which a pivotally supported braking element was mounted on the sound box and normally held in inoperative position by means of a pivotally mounted latch, also carried on the soundbox. The pivoted latch had a bias to brake releasing position but was restrained from taking this position while the sound box was moving across the groove zone by the engagement with the groove of the record of a non-playing follower. IVhen the sound box had reached the termination of the groove zone, the nonplaying follower would be held at the margin of the groove zone to bring about the release of the braking element which would thereupon swing into engagement with the face of the record to stop the rotation thereof. At the same time that the braking mechanism was operated. the stylus was lifted from its playing position in contact with the record.

In my application filed July 30, 1915, Serial No. 12.733, there was disclosed a modification of the earlier one in which substantially the same mechanism was mounted on the sound box for lifting the needle. However. instead of causing the record to be brought to a stop by the engagement of a member carried by the sound box with the face. of the record. a roller was added which operated by its engagement with the rotating record to carry the sound box to a position at the periphery of the record and into engagement with a separate braking device Specification of Letters Patent.

Patented July 4, 1916.

Serial No. 74,682.

which thereupon stopped the rotation of the record carrier.

The present application discloses a further improvement of the devices disclosed in the foregoing applications in which substantially the same parts are again mounted on the sound box but in this instance a pair of braking devices are carried directly by the tone arm. Also the roller which is made use of in this instance is arranged to carry the sound box toward the center of this record instead of to the periphery thereof and in this central position causes one of the braking devices to directly engage the record carrier to stop the rotationthereof. The remain ing of the two braking devices on the tone arm is arranged to engage the'record carrier when the tone arm is moved to a position in which the record disks can be exchanged.

In the accompanying drawings an embodiment of the invention is shown in which substantially the same stopping device controlling mechanism is employed that is characteristic of the devices shown in the prior' applications to which reference has been made.

In the drawings Figure 1 is a plan view of a preferred embodiment of the invention of positions. Fig. 2 is a side elevation of the complete device. Fig. 3 is a side elevation of the devices carried by the sound box in position to lift the stylus and carry the sound box to brake applying position. Fig. 4 is an end elevation of the sound box and the parts carried thereby showing the relative position of the stylus and the brush follower when the stylus is at the beginning of the groove zone. Fig. 5 is a side elevation of the parts carried by the sound box in the position they assume when the sound box is lifted to stylus exchanging position. Fig. 6 is a view partly in section and partly in elevation showing the means for retarding the movement of the tone arm at the termination of the groove zone. Fig. 7 is a detail view showing the bearing support for the latch device.

In the drawing the numeral 1 designates the rotatable record support for the record disk :2.

At 3 is shown a brake device which includes the two brake shoes r and 5 which are preferably made of leather and adapted, in different positions of the tone arm (3 on which the'brake device is mounted, to engage the peripheiy and stop the rotation of the record carrier 1. The brake device is clamped to the supporting arm by means of the band 7.

In the. position indicated at o in Fig. l which is the position occupied by the arm when the sound box is removed from its position over the record for the purpose-of changing records, the brake shoe 4 is brought into engagement with the record support. In the position shown at c in Fig. 1, which is the position the arm automatically takes when the stylus has reached the termination of the groove zone, the brake shoe is brought into engagement with the record support. Thus it will be seen that in the two extreme positions to which the arm can be moved a brake is automatically applied to stop the rotation of the record support while at the position 7) the record carrier is free to begin its rotation.

A switch, indicated at 8 in Fig. 1, for controlling the circuit to the driving motor when the electric type of motor is employed which may be used in conjunction with the braking member In the position of the tone arm indicated at c the member 3 would engage the end 9 of the switch arm to break the circuit controlled thereby. The switch contacts are placed beneath the top 10 of the motor casing while the member 9 of the switch projects outwardly through the slot 11 to a position in which 9 can be engaged by the brake device 3.

A lug 12 projecting upwardly from the plate 13 acts as a guide and stop for the brake device 3 when the brake member 4 is in engagement with the record carrier or turn table 1. In this position of the brake device the stop lug 1'2 engages the shoulder ll to prevent excessive movement of the brake member .4.

Iivotally mounted in the end of the tone arm is the curvei'l sound box supporting tube 15 carrying the sound box 16 and the stylus 1T. Mounted on the sound box is the bracket 18 which forms a support for the devices which serve to lift the needle from the record and to carry the sound box to a non-playing brake-applying position.

Pivotally mounted on an extension 1!) of the supporting bracket 18 is the arm 20 carrying at one end the buffer member 21 preterably made of soft rubber and the roller 22, and having the other end arranged to cooperate with a latch 23, pivoted in a bearing support 2i integral with the supporting bracket 18. The arm 20 if left free to move will be rocked on its pivot'by the weight of the butter 21 and roller 22 which when released drops into engagement with the face of the record. Suitable stops 25 are provided on the extension 11) for cooperation with the arm 20 in either of its extreme positions.

Extending through a guide 26 and forniing part of the latch 23 is a sliding rod 27 which is provided at its upper end with the weight 28 and carried at its lower end the brush, or non-playing. brush follower 2!). The weight 28 is so disposed with relation to the pivotal point of the/latch member as to tend to move the latch member to releasing position unless some means for restricting such movement is provided.

In order to prevent the movement of the latch to releasing position the brush 29 is employed. In the normal operation of the instrument the brush 29 engages with the grooves of the record and the frictional contact thus afforded is sufficient to .prevent any lateral movement of the brush across the grooves thereby holding the latch member in latching position. To overcome any tendency which the brush might have to slide across the smooth outer margin of the record when the stylus is at the beginning of the groove Zone. the brush has the record engaging end thereof arranged at an inclination or bevel with relation to the surface of the record as shown in Fig. 4. By this arrangement the extreme edge of the record disk will restrain any movement of the brush which might result in a premature. release of the stopping mechanism.

In order to retard the movement of the tone arm and thereby prevent the stylus from continued movement toward the center of the disk after emerging from the last convolution of the groove, the weighted arm 30 is provided. This arm is pivoted on the supporting bracket 31 forming part of the braking device 3, and is adapted to be engaged by the fixed lug 13' on the plate 12-3 as the tone arm moves across the Zone of grooves. It will be seen that the weight 32 when in contact with the lug 13' will exert a constant resistance against movement of the tone arm. The force of this resistance is less than the force exerted by the grooves on the stylus and consequently the stylus continues to be moved inwardly toward the center of the record until the final convolution of the groove zone has been reached. The pressure exerted by the weighted arm on the tone arm will now become apparent and the stylus will be restrained from further movement toward the center of the record. even if a slight tilting of the instrument should tend to cause such a movement. The force of the weight which tends to move the tone arm outwardly from the center of the record will now hold the stylus closely adjacent the termination of the zone of grooves, or cause the stylus to drop back into the last convolution immediately after emerging therefrom at each rotation of the disk. When the stylus has reached this position the brush follower 29, which extends a considerable distance beyond the needle toward the periphery of the disk, is still in engagement with a number of grooves and consequently continues to be fed toward the center of the disk by the action of'the grooves. It will be clear that, since the stylus is now stationary and the brush follower continues to move across the groove zone, the brush will move relatively to the sound box and the latch member 23 as a whole will be rocked about its pivot 24 and, aided by the action of the weight 28, will be tilted to a position in which the arm 20 will be released. The buffer 21 will now drop into engagement with the face of the record and will be immediately carried by the rotation of the disk to the position shown in Fig. 3 where the roller 22 engages the record and the arm 20 is in contact with one of the stops 25.

The movement of the buffer 21 with the record to bring'the roller 22 into engagement therewith, has the effect of lifting the stylus from the record as shown in Fig. 3. The axis of the roller 22 is fixed at such an angle with relation to a radial line of the record disk drawn through the roller, that the continued rotation of the disk will carry the sound box toward the center of the disk to the position indicated at c in Fig. 1. In this position of the sound box the brake member 5 is brought into engagement with the periphery of the record disk support to stop the further rotation thereof.

In order to restore the position of the parts,the finger holds 33 and 3-1:, which are provided for this purpose, are grasped to bring the sound box to the position indicated in Fig. By this operation the weight of the buffer 21 and the roller 22 will bring the arm 20 to such a position that the end thereof will pass into place behind the latching member 23 when the finger hold 34 attached to the latch is released. The sound box is now in position to have the stylus removed and a fresh one substituted therefor. A movement of the tone arm from the position shown at c in Fig. 1 to that shown at a in Fig. 1 will remove the brake member 5 and bring the brake member 1 into engagement with the record carrier to hold the carrier stationary while a change of records is being made. Thus it will be seen that the braking device carried by the tone arm is effective in two non-playing positions to effect the stopping of the mechanism.

A spring 35 carried by the supporting arm 36 for the finger hold 33 is made use of when the finger holds are pressed together in the operation of swinging the sound box down to playing position, to frictionally engage and hold the sliding rod 27 and the brush 29 carried thereby in elevated position while the stylus is being adjusted to position at the beginning of the zone of grooves. \Vhen the stylus has been put in place the release of the finger holds will allow the brush to drop to the position shown in Fig. 4 into engagement with the extreme edge of the disk from which position it will gradually creep across the smooth margin of the disk and into engagement with the grooves as the stylus begins its progressive movement across the groove zone. In this view the brush is shown as partly broken away.

\Vhat is claimed, is: l

l. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member, a sound box carried thereby, means carried by the sound box and movable into engagement with the record disk to carry the sound box to a posit1on adjacent the center of the record disk when the stylus has reached the termination of the groove zone, controlling means for sald carrying means engaging the groove zone and operable by the final convolutions thereof to allow the carrying means to move lnto engagement with said record disk, and stopping mechanism operated by said swinging member when the sound box is in such position.

2. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member, a sound box carried thereby, means carried by the sound box and movable into engagement with the record disk to lift the stylus from the record disk at the termination of the groove zone and to carrythe sound box to a position adjacent the center of the disk, controlling means for said carrying means engaging the groove zone and operable by the final,convo lutions thereof to allow the lifting and carrying means to move into engagement with said record disk, and stopping mechanism operated by said swinging member when the sound box is in such position.

A sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member, a sound box carried thereby, means carried by the sound box and movable into engagement with the record disk to lift the stylus and to carry the sound box to a position adjacent the center of the record disk when the stylus has reached the termination of the groove zone, controlling means for said carrying means engaging the groove zone and operable by the final convolutions thereof to allow the lifting and carrying means to move into engagement with said record disk, and means carried by the swinging member for automatically stopping the mechanism when the sound box is in such position.

4. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member, a sound box carried thereby, means carried by the sound box and movable into engagement with the record disk to carry the stylus to a position adjacent the center of the record disk when the stylus has reached the termination of the groove zone, controlling means for said carrying means engaging the groove zone and operable by the final convolutions thereof to allow the lifting and carrying means to move into engagement with said record disk, and means carried 'by the swinging member for automatically engaging the record disk support to stop the rotation thereof when the sound box is in such position.

5. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member, a sound box carried thereby, means carried by the sound box and movable into engagement with the record disk to lift the stylus and to carry the sound box to a position adjacent the center of the record disk when the stylus has reached the termination of the groove zone, v controlling means for said carrying means engaging the groove zone and operable by.

the final convolutions thereof to allow the lifting and carrying means to move into en- 'gagement with said record disk, a switch,

and means carried by the swinging member for opening said switch to stop the mechanism when the sound box is in such position.

6. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member, a sound box carried thereby, means carried by the sound box and controlled by the record grooves for moving into engagement with the record disk to carry the sound box to a position adjacent the center of the record disk when the stylus has reached the termination of the groove zone, and stopping mechanism operated by said swinging member when the sound box is in such position.

7. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member, a sound box carried thereby, means carried by the sound box and controlled bythe record grooves for moving into engagement with the record disk to lift the stylus and to carry the sound box to a position adjacentthe center of the record disk when the stylus has reached the termination of the groove zone, and means carried by the swinging member for automatically engaging the record disk support to stop the rotation thereof when the sound box is in such position.

8. A sound reproducer stopping devlce comprising: a record disk having a zone of grooves, a swinging member, a sound box carried thereby, a roller carried by the sound box and movable into engagement with the operable by the final convolutions thereof to v allow the carrying means to move into engagement with said record disk, and means carried by the swinging member for automatically stopping the mechanism when the sound box is in such position. I

9. sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging-member, a sound box carried thereby, a roller carried by the sound box and controlled by the record grooves for moving into engagement with the record disk to lift the stylus and to carry the sound box to a position adjacent the center of the record disk when the stylus has reached the termination of the groove zone,

controlling means for said lifting and carrying means engaging the groove zone and operable by the final convolutions thereof to allow the carrying means to move into engagement with said record disk, and means carried by the swinging member for automatically stopping the mechanism when the sound box is in such position.

10. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member, a sound box carried thereby, means carried by the sound box and movable into engagement with the record 'disk to lift the stylus and to carry the sound box to a position adjacent the center of the record disk when the stylus has reached the termination of the groove zone, means engaging said grooves for controlling said lifting and carrying means, stopping mechanism operated by said swinging member, and operable by the final convolutions thereof when the arm is in such position.

11. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member, a sound box carried thereby, means carried by the sound box and engaging the record grooves for lifting the stylus and carrying the sound box to a position adjacent the center of the record disk when the stylus has reached the termination of the groove zone, means enaging said grooves and operable by the final convolutions thereof to control the lifting and carrying means, and stopping mechanism operated by saidswinging member when the arm is in such position.

12. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member. a sound box carried thereby, means carried by the sound box and movable into engagement with the record disk, for moving the swinging member to a position in which the sound box is removed from the groove zone, stopping means against operation. H ll. A sound reproducer stopping device. comprising a record disk having a zone of mechanism operated by the swinging member when the sound box is in such position,

latching means for holding the moving means from operatlon, and means engaging the recordgrooves and operable by the final convoluti'ons thereof for causing the latching means to release the moving means, said groove engaging means being composed of a plurality of parts individually lncapable but collectively capable of actuating the latching means.

13. A sound,reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member, a sound box ated by the swinging -member,-jvhen the.

sound box is "in such position, andimeans engaging the grooves of the recordfor hold ing said moving means againstfoperationfl and operable by the final conv'olutions'thereof to release the stopping means, said groove engaging means being, composed. of a vplurality ofparts individually ncapable but collectively. capable of holdmg grooves, a; swinging member, vasound bo'x carried thereby means carried by the'sound box and movable into engagement with the record disk for moving thes winging .mem-' ber toa position in which the sound box is removed "from -the groove: zone, stopping mechanism operated b thersw'mgmg member when the s'oun'l box IS mfysuchjpositioll,

means for controlling fsaid moving means,

and means composed'fof a plurality ofbris tless. adapted;,t. o engagej the I grooves of the record and.Olirableiby; the final-convolutions thereof towactuatesaidr controlling :means. said'qb'ristlesbeing individually incapable of; performing their function but ,collectively capable of" doing so;

A sound 'reproducer stopping device "comprising: a record disk having a zone of groove'sja swinging."member; a sound box' carried thereby, meanscarried by the sound v box and nio'vable into engagement with the record disk to move the swinging -member 'toa position inwhich the .soi'nid'box is removed from the groove zone, stopping ,mech- Y anism operated by the swinging member when the sound box is in such position. and a ln'ushzmember mounted on the sound box and engaging the record grooves and operable by the final convolutlons thereof for con trolling'sald moving means, said brush engaging said record at an angle thereto gm of thexgroove zone..-

the stopping. i

and with the bristles extending in the direction of rotation of said record.

16. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a swinging member, a sound box carried thereby, means carried by the sound box and tending to move into engagement with the-record disk to move the swinging member to a position in which the sound box is removed from the groove zone, stopping mechanism operated by the swinging member when the sound box is in such position, means carried by the sound box including a brush for holding said moving means inoperative by frictional engagement with the record grooves, said brush being operable by the. final convolutions of the grooves -to release the moving means for opl erat ion,'the bristles of said brush increasing in length fromthe side nearest the center of Ithe record to the. other side whereby they will engage the edge of the record to hold the stopping means inoperative when the sound box is in a'position at the outer mar- -'17. A device of' the character described comprising: a -record disk having a zone of grooves, a swinging member, a sound box carr edf thereby, means carried by the sound box and movable into engagement with the record :disk for moving the swinging mem ber to afposition in which the sound box is. -'removedfrom the groove zone, stopping mechanism-operated by the swinging member when the sound boxis 1n such posltion,

and means carried by the sound box includin g' a' brush movable with relation to the sound box for holding vthe moving means inoperative, said brush adapted to engage the grooves of the record and operable by-the final convolutions thereof to actuate said moving means, and said brush having a beveled edge for contact with the record.

18."A- record engaging member for a sound reproducer stopping device comprising'i a swinging member a sound box car- "ried,. thereby,-means carried by the sound box and movable into engagement with the record-disk for moving the swinging member to a position in which the sound box is removed from the groove zone, stopping mechanism operated by the swinging member when the. sound box is insuch position, and means carried by the sound box including a guide. a brush slidably carried by the guide for holding the moving means. said brush adapted to engage the grooves of the record and operable by the filial convolutions thereof to actuate said moving means, said brush having bristles which progressively increase in length from the edge of said brush nearest the center of the record disk'to the edge of said brush most remot from said center.

'19. In a sound reproducer, a swinging member, a stylus carried thereby, a. record having a zone of grooves, and means for im-' peding the movement of the swinging member to hold the stylus at the termination of 1 having a zone of grooves,.and means for offering resistance to the movement of the swinging member, said means becoming ef- "fective when the stylus has reached the termination of the groove zone to prevent further movement of the swinging arm.

21. In a sound reproducer, a swingm member, a stylus carried thereby, arecor having a zone of grooves, means for lifting the stylus out of engagement with the record, and means for impeding the movement of the swingingmember to hold the stylus at the termination of the zone of grooves until the stylus lifting means has acted.

22. In a sound reproducer, a swinging member, a stylus carried thereby, a record having a zone of grooves, means for' stopping the reproducer mechanism, and means for impeding the movement of the swinging member to hold the stylus at the termination of the zone of grooves until the stopping mechanism has begun to act.

23. In a sound reproducer, a swinging member, a stylus carried thereby, a record having a zone of grooves, means for lifting the'stylus out of engagement with the record and for stopping the reproducer mechanism, and means for impeding the movement of the swinging member to hold the stylusat the termination of the groove zone until the lifting and stopping mechanism has begun to act.

24. A sound reproducer stopping device comprising: a record, a swinging member, stopping mechanism, means engaging the record grooves during the operation of the reproducer and movable with relation to the reproducer stylus to control the operation of the stopping mechanism, and'means for impeding the movement of the swinging member to hold the stylus at the final groove while the controlling means is being moved relatively to the stylus to cause the operation of the stopping mechanism. I

25. A sound reproducer stopping device comprising: a sound box, a record, a rotatable record support, mechanism for stopping the rotation of the record support,

means carried by the sound box in engage. ment with the record grooves and movable with relation to the reproducer stylus to control the operation of the stopping mechanism and means for impeding the movement of the swinging arm to hold the stylus in the final groove while the controlling means comprising: a swinging arm, a record, a rotatable record support, a device carried by the swinging arm for stopping the rotation of the record support, means fornormally holding the; stopping device inoperative, means carried by the swinging arm in engagement with the record grooves and movable with relation to the reproducer stylus to release the stopping'device for operation, and means for impeding the movement of the swinging arm to hold the stylus adjacent'the final groove while the controlling means is being moved relatively to the. stylus to operate the stopping mechanism.

27. A sound reproducer stopping device comprising: a swinging arm, a sound box carried thereby, a record, a rotatable record support, a device operated by the swinging arm for stopping the rotation of the record support, means for engaging the rotating record to carry the swinging arm into position to operate the stopping device, means carried by the sound box in engagement with the record grooves'and movable with relation to the reproducer stylus to control the operation of the carrying means, and means for resisting the movement of the swinging arm to hold the stylus from movement away from the termination of the groove zone while the controlling means is being moved relatively to the stylus to cause the operation of the stopping mechanism.

28. A sound reproducer stopping device comprising: a swinging arm, a sound box carried thereby, a record, a rotatable record support, a device carried by the swinging arm for lifting the stylus from the record and for stopping the rotation of the record support, means for normally holding the lifting and stopping means inoperative, means carried by the swinging arm in engagement with the record grooves and movable with relation to the reproducerstylus to release the lifting and stopping means for operation, and means for impeding the 

